CN220159525U

CN220159525U - Silicon carbide membrane filter plate, filter core and filter

Info

Publication number: CN220159525U
Application number: CN202321672929.XU
Authority: CN
Inventors: 李安琪; 吕金燕
Original assignee: Singularity Low Carbon Intelligent Equipment Zhejiang Co ltd
Current assignee: Singularity Low Carbon Intelligent Equipment Zhejiang Co ltd
Priority date: 2023-06-28
Filing date: 2023-06-28
Publication date: 2023-12-12
Anticipated expiration: 2033-06-28

Abstract

The utility model relates to a silicon carbide membrane filter plate, a filter core and a filter, and relates to the technical field of filters, wherein the silicon carbide membrane filter plate comprises a plate body, a plurality of filter channels are arranged on the plate body, the filter channels penetrate through two side walls of the plate body in the thickness direction of the plate body, the inner walls of the filter channels are provided with sealing plates, and the peripheral sides of the sealing plates are connected with the inner walls of the corresponding filter channels and seal the corresponding filter channels; the sealing plates in two adjacent filtering channels are arranged at intervals along the length direction of the filtering channels; the central axis of the filtering channel is obliquely arranged along the thickness direction of the plate body, and the plate body is made of silicon carbide material. In the utility model, one end of the filtering channel is closed, and the other end of the filtering channel is open, and the open end of one filtering channel is arranged at the closed end of the other adjacent filtering channel, so that the filtering function of the silicon carbide membrane filtering plate is realized; because the filter channel is obliquely arranged, particles are separated from the side wall of the filter channel conveniently, and therefore the silicon carbide membrane filter plate is convenient to back-blow and clean.

Description

Silicon carbide membrane filter plate, filter core and filter

Technical Field

The utility model relates to the technical field of filters, in particular to a silicon carbide membrane filter plate, a filter core and a filter.

Background

A gas filter is a device that traps dust from a porous filter material and allows the gas to be purified.

At present, a filter which is commonly used is a filter cartridge type filter, the filter is made of fiber fabrics, the filter can only be used for filtering at normal temperature, the smoke filtering at the temperature of more than 200 ℃ cannot be realized, in addition, the filter area is increased, the surface is in a corrugated shape, the filtering principle is fiber filtering, and when the filter cartridge is used to be saturated, the filter cartridge cannot be effectively regenerated.

In order to meet the requirement of flue gas filtration under high temperature conditions, ceramic fiber filter pipes are commonly used at present, so that high temperature flue gas filtration under the environment of high temperature resistance less than or equal to 750 ℃ can be realized, but the filter pipes are designed to have the wall thickness of 20mm and small filtration area, one filter pipe with the length of 3 meters and the inner diameter of 110mm and the filtration area is only 1.4m under the influence of the performance of materials ² Therefore, large-capacity flue gas filtration cannot be realized.

In order to solve the problems, in recent years, under the drive of low-carbon economic climax, a silicon carbide material enters the field of new materials, and a silicon carbide membrane filter core is a new material filter core which enters industrial application after 2010, and can resist high temperature of above 800 ℃ and adapt to the working environment of strong acid and strong alkali with pH of 0-14 because of extremely small contact angle, so that the material is widely applied to the industries of solid-liquid separation and gas-solid separation, and has excellent filtering performance.

However, silicon carbide materials are typically manufactured as filter cartridges for filtering solid particles when in use. At present, when the silicon carbide membrane filter core with common specification is applied to gas-solid separation, the pressure drop loss is obvious during gas-solid filtration separation due to the thicker wall thickness of the silicon carbide membrane filter core, and meanwhile, the flow passage of the silicon carbide membrane filter core is longer, so that when the silicon carbide membrane filter core is adopted for back blowing regeneration, particles are difficult to discharge from the filter core, and the filter core is difficult to use online for a long time.

Disclosure of Invention

The utility model aims to provide a silicon carbide filter plate, a filter core and a filter which are convenient for back blowing and chemical cleaning.

In a first aspect, the present utility model provides a silicon carbide membrane filter plate, which adopts the following technical scheme:

the silicon carbide membrane filter plate comprises a plate body, wherein a plurality of filter channels are formed in the plate body, the filter channels penetrate through two side walls of the plate body in the thickness direction of the plate body, a sealing plate is arranged on the inner wall of the filter channels, and the periphery of the sealing plate is connected with the corresponding inner wall of the filter channels and seals the corresponding filter channels; the sealing plates in two adjacent filtering channels are arranged at intervals along the length direction of the filtering channels; the central axis of the filtering channel is obliquely arranged along the thickness direction of the plate body, and the plate body is made of silicon carbide material.

By adopting the technical scheme, the plate body is provided with a plurality of filtering channels, so that gas circulation can be realized; the sealing plate is arranged in the filtering channel and seals the filtering channel, so that air flow entering the filtering channel cannot directly flow through the filtering channel, the air pressure in the filtering channel is inevitably increased along with the increase of the air flow, and the plate body is made of silicon carbide material, so that the air flow can enter the adjacent filtering channel through the side wall of the filtering channel after the air pressure is increased, and the filtering of the air flow is realized through the side wall of the filtering channel; because the sealing plates in the two adjacent filter channels are arranged at intervals along the length direction of the filter channel, air flow can be discharged into one filter channel, filtered by the side wall of the filter channel, then enters the adjacent filter channel and is discharged from the filter channel, and therefore the filter function is realized.

Because the axis of filtering passageway sets up along the thickness direction slope of plate body, there is certain contained angle filtering passageway and thickness direction of plate body for when wasing the back-flushing of carborundum membrane filter, particulate matter on the filtering passageway lateral wall can receive the downward component of self gravity one slope, in addition, when blowback air current perpendicular to plate body surface, the air current can directly strike on the lateral wall of filtering passageway, especially when filtering passageway is in vertical direction slope down, thereby be convenient for particulate matter discharge among the filtering passageway of slope, consequently be convenient for carborundum membrane filter back-flushing, be favorable to carborundum membrane filter regeneration.

Optionally, an included angle between the central axis of the filtering channel and the thickness direction of the plate body is 15 degrees to 45 degrees.

Through adopting above-mentioned technical scheme, the inclination setting of filtration passageway is between 15 to 45, and during back-flushing cleaning, the particulate matter in the filtration passageway easily breaks away from in the filtration passageway, never improves the abluent effect of carborundum membrane filter back-flushing, is favorable to carborundum membrane filter regeneration.

Optionally, the cross section of the filtering channel is rectangular, the width of the side wall of the filtering channel is 2mm to 5mm, the length of the filtering channel is 49mm to 800mm, and the thickness of the filtering channel is 1mm to 1.5mm.

Further preferably, the side wall length of the filter channel is 49mm to 51mm.

By adopting the technical scheme, firstly, when the wall thickness of the side wall of the filtering channel is too small, the material strength is reduced, the pressure resistance is reduced, and the filtering channel is fragile in the use process; when the wall thickness of the side wall of the filtering channel is too large, the filtering resistance is increased, the regeneration is not facilitated, and the filtering area is reduced.

Secondly, when the side length of the side wall of the filtering channel is too large, end encapsulation of the filtering channel is not easy to complete, and the end encapsulation part is fragile, so that the filtering area is reduced; when the side length of the side wall of the filtering channel is too small, the difficulty of industrial production is increased, and the regeneration is not facilitated.

Finally, when the length of the side wall of the filtering channel is too long, the materials in the channel cannot be smoothly blown out during filtering saturated back blowing regeneration; when the length of the side wall of the filtering channel is too short, the filtering area is reduced, and the filtering of the large-gas-quantity gas in industrial application is not easy.

The specific height-to-diameter ratio is set for the filter channel, the width of the side wall of the filter channel is 2mm to 5mm, preferably 3mm, the length of the side wall of the filter channel is 49mm to 51mm, preferably 50mm, the thickness of the side wall of the filter channel is 1mm to 1.5mm, and the size design can improve back flushing regeneration of the silicon carbide membrane filter plate after filtration saturation.

In a second aspect, the present utility model provides a filter element, which adopts the following technical scheme:

the filter core is provided with the silicon carbide membrane filter plates, and comprises a mounting bracket, wherein a plurality of the silicon carbide membrane filter plates are arranged on the periphery of the mounting bracket, and the periphery of the mounting bracket is sealed by the silicon carbide membrane filter plates; a filter flue capable of containing gas to pass through is formed among the silicon carbide membrane filter plates; two adjacent filtering channels are respectively communicated with the filtering flue and the outer side of the mounting bracket; a bottom plate is arranged on one end face of the mounting bracket, and the bottom plate seals the filtering flue.

By adopting the technical scheme, the side wall of the mounting bracket is provided with the plurality of silicon carbide film filter plates, the side wall of the mounting bracket is sealed by the plurality of silicon carbide film filter plates, a filtering flue is formed between the silicon carbide film filter plates arranged on the side wall around the mounting bracket, one end of the mounting bracket is provided with the bottom plate, and the bottom plate seals the filtering flue; therefore, dirty gas can enter the filter channel on the silicon carbide membrane filter plate from the outer side of the filter core, so that the dirty gas can enter the filter flue after being filtered by the silicon carbide membrane filter plate, and the bottom plate seals one end of the filter flue, so that the purified gas can be discharged from the other end of the filter flue. Thereby realizing the filtration of the gas by the filter element.

Optionally, a first constant pressure valve is arranged on the bottom plate, and the first constant pressure valve is communicated with the filtering flue.

Through adopting above-mentioned technical scheme, the setting of first constant pressure valve, first constant pressure valve is according to the filtration flue in to outside the filtration flue one-way opening for guarantee the blowback in-process, carry out the pressure release when instantaneous blowback atmospheric pressure surpasses first constant pressure valve setting value, guaranteed the atmospheric pressure safety in the filter core, the filter core is broken when preventing the blowback, guaranteed the life of filter core.

Optionally, one end of the mounting bracket is provided with a mounting snap ring, the mounting snap ring is arranged on the outer side wall of the mounting bracket, and the mounting snap ring and the bottom plate are arranged at intervals along the length direction of the filtering flue.

Through adopting above-mentioned technical scheme, one side that keeps away from the bottom plate on the installing support is provided with the installation snap ring, and the installation snap ring sets up on the installing support lateral wall. Therefore, the installation snap ring is convenient for the installation and the clamping connection of the filter element.

In a third aspect, the present utility model provides a filter, which adopts the following technical scheme:

the filter is provided with the filter core, and comprises a shell, wherein a discharge pipeline and a discharge pipeline are respectively communicated with the shell, a filter layer is arranged in the shell, the inner wall of the filter layer is connected with the inner wall of the shell, and the communication part of the discharge pipeline and the shell are respectively arranged at two opposite sides of the filter layer; the filter layer comprises a flower plate, a plurality of mounting holes are formed in the flower plate in a penetrating mode, the mounting holes are in one-to-one correspondence with the filter cores and are in plug-in connection with the corresponding mounting holes, and the mounting clamping rings are in mutual interference with the flower plate along the length direction of the filter cores.

By adopting the technical scheme, the arrangement of the discharge pipeline and the discharge pipeline in the filter is used for circulating the gas inside and outside the shell; the filter layer is arranged in the shell, and the discharge pipeline are arranged on two opposite sides of the filter layer, so that the gas discharged into the shell can be discharged from the shell after being filtered; among the filter layers, the setting of flower plate sets up the mounting hole on the flower plate, can realize the grafting of filter core through the mounting hole, and the setting of installing snap ring and mutual conflict of flower plate realizes the location of filter core.

Optionally, the pattern plate is provided with fastening cover plates at intervals along the thickness direction of the pattern plate, and the mounting snap ring is arranged between the pattern plate and the fastening cover plates; the utility model discloses a clamp device, including the clamp device, the clamp device is provided with the clamp cover plate with be provided with a plurality of clamp screw group between the clamp cover plate with the clamp device, the clamp screw group includes clamp bolt and fastening nut, the clamp bolt with fastening nut passes through threaded connection just clamp bolt passes the clamp cover plate with the clamp device, the clamp cover plate with the clamp device is followed clamp bolt's axial setting is in clamp bolt's nut with between the fastening nut.

Through adopting the technical scheme, the fastening cover plate is arranged on one side of the flower plate, and the mounting snap ring is arranged between the flower plate and the fastening cover plate, so that the installation and the fixation of the filter element can be realized through the arrangement of the fastening cover plate and the flower plate; the fastening cover plate and the flower plate can be connected with each other through the arrangement of the fixed screw group.

Optionally, the fastening bolt is sleeved with a distance sleeve, and two axial ends of the distance sleeve respectively collide with the flower plate and the fastening cover plate.

Through adopting above-mentioned technical scheme, the telescopic setting of settlement can restrict the distance between flower board and the fastening apron.

Optionally, a venturi is arranged in the filter core.

Through adopting above-mentioned technical scheme, the setting of venturi can be to the air current pressure boost of blowback to can increase the blowback cleaning effect of filter core.

In summary, the present utility model includes at least one of the following beneficial technical effects:

1. according to the utility model, one end of the filtering channel in the silicon carbide membrane filtering plate is closed, one end of the filtering channel is open, and the open end of one filtering channel is arranged at the closed end of the other adjacent filtering channel, so that air flow can be discharged into one filtering channel, filtered by the side wall of the filtering channel, then enters the adjacent filtering channel and is discharged from the filtering channel, and the filtering function of the silicon carbide membrane filtering plate is realized.

The filtering channels are transversely arranged, when the filtering particles contain crystals and colloid substances, the crystals and colloid substances are deposited on the bottom surface of the filtering channels due to the action of gravity, the two vertical surfaces and the top surface of the filtering channels still have the filtering function, and when the filtering particles are subjected to back blowing regeneration, dust deposited on the bottom can be blown off and back blown out of the filtering channels to realize regeneration. The traditional filtering channel is vertically arranged, crystals and colloid substances are easy to collect at the inlet of the filtering channel, the inlet of the filtering channel is blocked, the filtering channel loses the filtering capability, and the filtering efficiency is affected.

When liquid is filtered, superfine powder is deposited on the bottom surface of a filtering channel, after the filtering is finished, clean solvent is used for entering the filtering channel from the feeding direction, the superfine powder is cleaned or replaced by the solvent, and after the cleaning or replacement index is reached, the valuable superfine powder in the filtering channel is reversely flushed by the solvent. The traditional filtering channels are vertically arranged, ultrafine powder is deposited in the filtering channels, and after the ultrafine powder is deposited to a certain degree, the ultrafine powder naturally falls off from the filtering channels and is collected together due to gravity, so that the ultrafine powder cannot be cleaned or replaced by solvents, and the industrial production is not facilitated.

2. The filter channels are obliquely arranged, so that particles on the side walls of the filter channels can be subjected to an obliquely downward component force of gravity when the silicon carbide membrane filter plates are reversely blown and cleaned, and the particles are conveniently separated from the side walls of the filter channels, so that the silicon carbide membrane filter plates are conveniently reversely blown and cleaned.

3. The side wall of the filtering channel is arranged in size and shape according to the side length of the filtering channel: 2mm-5mm, thickness 50 mm: the filtering area of the single filtering channel can reach 400mm ² To 1000mm ² 。

4. According to the utility model, the filter core assembled by the plurality of silicon carbide film filter plates is used, and the filter core is used for assembling the filter, so that the filtering area of the filter is increased, the dosage of the silicon carbide film filter plates in the filter core can be adjusted according to the actual filtering air quantity, the regeneration is easy, the continuous online use performance is stable, and the service life is long; the heat stability is good, the high temperature resistance is 800 ℃, and the long-term operation of strong acid and strong alkali can be resisted; the filtration pressure difference is low, and the initial operation is generally within 5 KPa; the aperture ratio is high, and the treatment capacity is large; the device is not easy to block, can be subjected to on-line back blowing regeneration, and is convenient to operate; the filter has the characteristics of corrosion resistance, high precision, high flux, easy regeneration, long service life and the like. The filter can also treat high-temperature flue gas (such as filtering coke powder in refined dry gas, highly corrosive tail gas, strong alkali gas, strong acid gas and the like).

Drawings

FIG. 1 is a schematic view showing the overall structure of a silicon carbide membrane filter sheet in example 1 of the present utility model.

Fig. 2 is a schematic perspective view of a filter channel in a silicon carbide membrane filter sheet in example 1 of the present utility model.

FIG. 3 is a schematic cross-sectional view of a silicon carbide membrane filter sheet in example 1 of the present utility model.

Fig. 4 is a schematic view showing the overall structure of the filter cartridge in embodiment 1 of the present utility model.

Fig. 5 is a schematic overall structure of another view of the filter element in embodiment 1 of the present utility model.

Fig. 6 is a schematic view showing the overall structure of the filter in embodiment 1 of the present utility model.

Fig. 7 is a schematic cross-sectional structure of a filter in embodiment 1 of the present utility model.

Fig. 8 is a schematic diagram of an exploded structure of a part of the filter layer in embodiment 1 of the present utility model.

Fig. 9 is a schematic view showing the overall structure of the filter in embodiment 2 of the present utility model.

Fig. 10 is a schematic view showing the internal structure of the filter in embodiment 2 of the present utility model.

Fig. 11 is a schematic view showing the internal structure of a filter in embodiment 3 of the present utility model.

In the figure, 1, a silicon carbide membrane filter plate; 11. a plate body; 12. a filtration channel; 13. a closing plate; 2. a filter element; 21. a mounting bracket; 22. filtering the flue; 23. a bottom plate; 24. a first constant pressure valve; 25. installing a clamping ring; 3. a housing; 31. discharging into a pipeline; 32. a discharge pipe; 33. a blowback pipeline; 34. a dust discharge port; 35. a baffle; 36. a second constant pressure valve; 37. an ash collection bin; 4. a filter layer; 41. a flower plate; 42. a mounting hole; 43. fastening the cover plate; 44. a vent hole; 45. a sealing gasket; 46. fastening the screw group; 461. a fastening bolt; 462. a fastening nut; 463. a distance sleeve; 47. a venturi; 48. and (5) clamping the ring.

Detailed Description

The present utility model will be described in further detail with reference to fig. 1 to 11.

Referring to fig. 1 and 2, a silicon carbide membrane filter plate comprises a plate body 11, wherein the plate body 11 is made of silicon carbide materials, and the plate body 11 is a cuboid plate with the length of 100mm, the width of 30mm and the thickness of 50 mm; the specific shape and specific dimensions of the plate 11 are determined by the specific environment of use.

Referring to fig. 1 and 2, a plurality of filtering channels 12 are formed in the plate 11 in a penetrating manner, the filtering channels 12 penetrate through two lateral surfaces of the plate 11 in the thickness direction, the cross section of each filtering channel 12 is square, the plurality of filtering channels 12 are arranged in a matrix manner, and the cross section shape and arrangement manner of each filtering channel 12 can be adjusted according to the actual use environment; the inner wall of the filter channel 12 is connected with a closing plate 13, and the peripheral sides of the closing plate 13 are connected with the inner peripheral wall of the filter channel 12, so that the corresponding filter channel 12 can be closed by the closing plate 13.

The closing plates 13 in two adjacent filter channels 12 are arranged at intervals along the length direction of the filter channels 12. Such that one end of each filter passage 12 is open and the other end is closed, and the open end of one filter passage 12 is disposed at the closed end of the other adjacent filter passage 12, of the adjacent two filter passages 12. The opening end of the filtering channel 12 can discharge turbid gas, and as the corresponding filtering channel 12 is closed by the closing plate 13, the air pressure of the turbid gas in the filtering channel 12 can be increased, so that the turbid gas flow can be filtered by the side wall of the filtering channel 12, and the filtered gas flow can enter the adjacent other filtering channel 12, and the gas flow at the moment is clean gas, so that one side of the plate 11 can discharge the turbid gas, and the opposite side of the plate 11 discharges clean gas.

The plate body 11 is integrally formed, so that the sealing property between the filter passages 12 can be ensured, and the filtering effect can be improved. The filtration accuracy of the silicon carbide film filter plate 1 can be classified into the following four types according to the film pore size of the silicon carbide film: 1 μm, 3 μm, 10 μm and 30 μm.

The filter passage 12 has a sidewall thickness of 1mm to 1.5mm, and when the wall thickness is too small, the material strength and pressure resistance are reduced and the filter passage is fragile in use; when the wall thickness is too large, the filtering resistance is increased, the regeneration is not facilitated, and the filtering area is reduced.

The width of the side wall of the filtering channel 12 is 2mm to 5mm, preferably 3mm, when the width is too large, the end part of the filtering channel 12 is not easy to be packaged, the end part packaging part is fragile, and the filtering area is reduced; when the width is too small, the industrial production difficulty can be increased, and the regeneration is not facilitated.

The length of the side wall of the filtering channel 12 is 49mm to 51mm, preferably 50mm, the filtering channel 12 is too long, materials in the channel cannot be smoothly blown out when the back blowing regeneration is carried out after the filtering saturation of the silicon carbide membrane filtering plate 1, the filtering channel 12 is too short, and the filtering area is reduced.

The arrangement is such that the pressure resistance difference of the silicon carbide film filter plate 1 is greater than 0.2kg/cm ² The aperture ratio is more than 60%, and the pressure resistance difference can be reduced under the condition of ensuring the aperture ratio; when the airflow velocity is 1m/min to 5m/min, the maximum pressure drop design value of the gas inside and outside the silicon carbide membrane filter plate 1 is 0.1MPa; on the premise that the silicon carbide membrane filter plate 1 is qualified, the high-temperature flue gas filtration at the temperature of less than or equal to 800 ℃ can be theoretically satisfied.

Referring to fig. 3, the length direction of the filter channel 12 is inclined along the thickness direction of the plate 11, and the central axis of the filter channel 12 forms an angle of 15 ° to 45 ° with the thickness direction of the plate 11, so that an angle exists between the filter channel 12 and both sides of the thickness direction of the plate 11. Therefore, when the blowback filter channel 12 is used for removing the attached particles on the inner wall of the filter channel 12, the particles on the side wall of the filter channel 12 can be subjected to a component force along the vertical direction due to the inclined arrangement of the side wall of the filter channel 12, so that the particles are separated conveniently, and the blowback cleaning of the silicon carbide membrane filter plate 1 is facilitated.

The implementation principle of the embodiment of the utility model is as follows:

the filtering area of the silicon carbide membrane filter plate 1 is increased;

the filtration area of the individual filtration channels 12 is:

the sidewall width is 2mm:2mm×4×50 mm=400 mm ² ；

The width of the side wall is 5mm:5mm×4×50 mm=1000 mm ² ；

I.e. the filtration area of the individual filtration channels 12 is 400mm ² To 1000mm ² 。

When the length and the width of the silicon carbide membrane filter plate 1 are respectively set to 1000mm and 300mm, the number of the filter channels 12 is as follows:

the sidewall width is 2mm: (300 mm. Times.1000 mm)/(2 mm+1 mm) ² 2= 16666;

the width of the side wall is 5mm: (300 mm. Times.1000 mm)/(5 mm+1.5 mm) ² 2=3550;

i.e. the number of filtration channels of a single silicon carbide membrane filter plate 1 is 3550 to 16666.

The total filtration area of the silicon carbide membrane filter plate 1 is:

the sidewall width is 2mm:400mm ² ×16666=6666400mm ² =6.666m ² ；

The width of the side wall is 5mm:1000mm ² ×3550=3550000mm ² =3.55m ² ；

I.e. the total filtration area of the silicon carbide membrane filter plate 1 is 3.55m ² To 6.666m ² 。

The using method of the silicon carbide film filter plate 1 comprises the following steps: when the dirty gas enters the corresponding filter channel 12, the lower end of the filter channel 12 is closed by the closing plate 13, so that the dirty gas passes through the side wall of the adjacent filter channel 12 and enters the adjacent filter channel 12, so that the dirty gas is filtered by the side wall of the filter channel 12, solid particles are intercepted in the corresponding filter channel 12, and clean air flow can be discharged into the adjacent filter channel 12, and the gas-solid filtering function of the silicon carbide membrane filter plate 1 is realized.

Referring to fig. 4 and 5, the filter element 2 includes a mounting bracket 21, wherein the mounting bracket 21 adopts a rectangular parallelepiped, and the specific shape of the mounting bracket 21 can be specifically selected according to the use environment. The periphery of the mounting bracket 21 is provided with a plurality of silicon carbide film filter plates 1, the silicon carbide film filter plates 1 seal the side wall of the mounting bracket 21, a filter flue 22 is formed between the silicon carbide film filter plates 1, the filter flue 22 is axially arranged along the axial direction of the mounting bracket 21, one of two adjacent filter channels 12 on the silicon carbide film filter plates 1 is communicated with the filter flue 22, and the other filter channel 12 is communicated with the outer side of the mounting bracket 21; a bottom plate 23 is arranged at one axial end of the mounting bracket 21, and the bottom plate 23 seals the filter flue 22; the bottom plate 23 is provided with a first constant pressure valve 24, and the first constant pressure valve 24 is communicated with the filter flue 22. Therefore, the filter element 2 is arranged in an environment requiring air filtration, turbid gas is discharged, the turbid gas enters the filter channel 12 in the silicon carbide membrane filter plate 1 along with the pressure increase of the turbid gas, and clean gas after being purified by the silicon carbide membrane filter plate 1 can be discharged into the filter flue 22 to complete the filtration of the air. Meanwhile, the first pressure-limiting valve 24 can be opened when the pressure in the filter flue 22 is too high in the back blowing regeneration process, so as to ensure the internal pressure of the filter element 2.

Referring to fig. 4 and 5, a mounting snap ring 25 is provided on an outer sidewall of the mounting bracket 21, the mounting snap ring 25 is provided at one end of the mounting bracket 21 in an axial direction of the mounting bracket 21, and the mounting snap ring 25 and the bottom plate 23 are provided at a mutual interval in the axial direction of the mounting bracket 21. The installation of the filter element 2 is facilitated due to the arrangement of the installation snap ring 25.

Referring to fig. 4 and 5, the central axis of the filter channel 12 and the central axis of the mounting bracket 21 are inclined to each other, one end of the filter channel 12, which is close to the mounting snap ring 25, is arranged along the central axis direction, which is close to the mounting bracket 21, and one end of the filter channel 12, which is close to the bottom plate 23, is arranged along the central axis direction, which is far away from the mounting bracket 21, so that when the filter core 2 is mounted along the vertical direction, the filter channel 12 is inclined downwards, so that when the filter core is cleaned by back blowing, solid particles in the filter channel 12 are separated by one gravity of the filter core, and the solid particles are discharged conveniently.

three silicon carbide film filter plates 1 are installed on each side wall of the cuboid mounting bracket 21 and are used for sealing the corresponding side wall of the mounting bracket 21, so that the total filtering area of the single filter element 2 is as follows:

the sidewall width is 2mm: 3X 4X 6.666m ² =79.992m ² ；

The width of the side wall is 5mm: 3X 4X 3.55m ² =42.6m ² ；

Thus, the first and second substrates are bonded together,the filter area of the filter element 2 to which the 12 silicon carbide film filter plates 1 are individually attached can be: 42.6m ² To 79.992m ² 。

If the filtering speed of the filter element 2 is the same as that of the ceramic tube, and the wind speed is 1m/min, the highest filtering wind quantity is as follows: 80m ² ×60min×1m/min=4800m ³ /h; because the wall thickness of the filtering channel 12 is 1mm to 1.5mm, the filtering speed can be increased to 3m/min, and the highest filtering air quantity of a single filter can reach 14400m ³ /h。

A filter, referring to fig. 6 and 7, comprises a housing 3, wherein a discharge pipe 31 and a discharge pipe 32 are arranged on the housing 3, and the discharge pipe 31 and the discharge pipe 32 are communicated with the housing 3. Be provided with filter layer 4 in the casing 3, filter layer 4 week side all with casing 3 inner wall interconnect for filter layer 4 can separate casing 3 into two parts of mutual isolation, and just discharges the intercommunication position of pipeline 31 and casing 3 and discharges pipeline 32 and casing 3's mounted position and set up respectively in the both sides of filter layer 4 along self thickness direction. Thus, turbid gas can be discharged into the discharge pipe 31, and after the turbid gas is filtered by the filter layer 4, clean gas after the filtration can be discharged from the discharge pipe 32, so that the filtration of the gas is realized.

Referring to fig. 7 and 8, the filter layer 4 includes a flower plate 41, the side wall of the flower plate 41 is connected with the inner wall of the shell 3, and the flower plate 41 separates the shell 3 into two mutually independent parts, a plurality of mounting holes 42 are formed in the flower plate 41, the mounting holes 42 penetrate through the flower plate 41 along the thickness direction of the flower plate 41, a plurality of filter cores 2 are arranged on the flower plate 41, the filter cores 2 are arranged in one-to-one correspondence with the mounting holes 42, the filter cores 2 are inserted into the corresponding mounting holes 42, the filter cores 2 are axially arranged along the vertical direction, and the mounting clamping rings 25 are mutually abutted with the flower plate 41 along the vertical direction. Thus, the arrangement of the flower plate 41 enables the installation of the filter element 2, and the filter element 2 is inserted into all the installation holes 42, so that the turbid gas discharged into the discharge pipe 31 must be filtered by the filter element 2 before being discharged, and thus the purification of the gas can be ensured.

The flower plate 41 is provided with the sealing gasket 45, and the two sides of the sealing gasket 45 along the thickness direction of the sealing gasket 45 respectively collide with the flower plate 41 and the mounting snap ring 25, so that the sealing gasket 45 can increase the tightness of the connection between the filter element 2 and the flower plate 41.

Referring to fig. 7 and 8, the filter layer 4 further includes a fastening cover plate 43, the fastening cover plate 43 and the pattern plate 41 are arranged at intervals along the vertical direction, and the mounting snap ring 25 is respectively abutted against the fastening cover plate 43 and the sealing gasket 45 along two sides of the mounting snap ring 25 along the thickness direction of the mounting snap ring, so that the fastening cover plate 43 and the pattern plate 41 can realize positioning and locking of the mounting snap ring 25, and the mounting stability of the filter element 2 is increased. The fastening cover plate 43 is provided with a plurality of vent holes 44, the vent holes 44 are arranged in one-to-one correspondence with the mounting holes 42, and the vent holes 44 are communicated with the corresponding filter element 2, so that the ventilation of the gas in the filter element 2 is ensured.

Referring to fig. 7 and 8, a plurality of fastening screw groups 46 are provided between the fastening cover plate 43 and the flower plate 41, the fastening screw groups 46 include fastening bolts 461 and fastening nuts 462, the fastening bolts 461 penetrate through the fastening cover plate 43 and the flower plate 41 in the vertical direction in the axial direction, and the fastening bolts 461 and the fastening nuts 462 are connected through threads, and the fastening cover plate 43 and the flower plate 41 are provided between the fastening nuts 462 and nuts of the fastening bolts 461 in the axial direction of the fastening bolts 461, so that the fastening screw groups 46 can fix the filter cover plate and the flower plate 41.

The fastening screw set 46 further includes a distance sleeve 463, the distance sleeve 463 is sleeved on the fastening bolt 461, and two axial ends of the distance sleeve 463 respectively abut against the fastening cover plate 43 and the flower plate 41, so that the distance sleeve 463 can limit the flower plate 41 and the fastening cover plate 43, so as to ensure the distance between the flower plate 41 and the fastening cover plate 43.

Referring to fig. 7 and 8, the housing 3 is further connected with a blowback pipe 33, the blowback pipe 33 is connected with a plurality of branch pipes, the branch pipes are arranged in one-to-one correspondence with the corresponding filter cores 2 along the vertical direction, and the air outlets of the branch pipes are arranged opposite to the filter cores 2 along the vertical direction, so when high-pressure air flow is introduced into the blowback pipe 33, the high-pressure air flow enters the corresponding filter cores 2 through the air outlets of the branch pipes, blowback is realized, and dust attached to the outer walls of the filter cores 2 can be blown down into the housing 3.

The dust discharge port 34 is formed through the inner wall of the lower side of the housing 3 so that dust can be discharged from the dust discharge port 34 after the dust is blown off by the blowback filter element 2. When the filter is used normally, the baffle 35 is inserted into the dust discharge port 34, and the baffle 35 closes the dust discharge port 34.

Be provided with venturi 47 in the filter core 2, venturi 47 corresponds the setting with the gas outlet of corresponding lateral conduit each other along self axial, and venturi 47 cover is established in filter core 2 and venturi 47 one end is provided with joint ring 48, and joint ring 48 thickness direction both sides are contradicted each other with installation snap ring 25 and fastening apron 43 respectively, consequently can fix venturi 47, and venturi 47's setting can increase the clearance effect of filter core 2 when blowbacking filter core 2.

The implementation principle of the embodiment of the utility model is as follows: when air filtration is performed: the discharge duct 31 is disposed below the filter layer 4 in the vertical direction, the discharge duct 32 is disposed above the filter layer 4 in the vertical direction, the filter core 2 is disposed in the vertical direction in the axial direction, and the filter flue 22 of the filter core 2 communicates with the inner space of the housing 3 above the filter layer 4 in the vertical direction. Turbid gas is discharged into the discharge pipeline 31, and after the turbid gas passes through the silicon carbide membrane filter plate 1 on the side wall of the filter element 2, purified air can enter the exhaust pipeline to realize gas filtration.

When liquid filtration is performed: the filter for filtering air is inverted, a discharge pipeline 31 is arranged below the filter layer 4 along the vertical direction, a discharge pipeline 32 is arranged above the filter layer 4 along the vertical direction, and the filter core 2 is communicated with the space of the shell 3 below the filter layer 4 along the vertical direction; the top of the filter element 2 is provided with a grid net for fixing filterability and eliminating vibration during liquid filtration and discharging of the filter element 2. In the discharge pipe 31, turbid liquid is discharged, which overflows into the filter element 2, and after being purified by the filter element 2, clean liquid is discharged into the housing 3.

Example 2:

the present embodiment differs from embodiment 1 in that, referring to fig. 9 and 10, a filter is: the silicon carbide membrane filter plate comprises a shell 3, wherein a plurality of silicon carbide membrane filter plates 1 are arranged in the shell 3, and the thickness of the silicon carbide membrane filter plates 1 is increased, so that the thickness of the silicon carbide membrane filter plates 1 is 500-800 mm. The two groups of silicon carbide film filter plates 1 are arranged, each group of silicon carbide film filter plates 1 is overlapped through a fixed support or an adhesive to form a plate shape, the side wall of each group of silicon carbide film filter plates 1 is fixedly connected with the inner side wall of the shell 3, the two groups of silicon carbide film filter plates 1 are arranged at intervals along the horizontal direction, and the filtering channels 12 in the silicon carbide film filter plates 1 are arranged along the horizontal direction. Two exhaust pipelines 31 are communicated with the shell 3, and the two exhaust pipelines 31 are respectively arranged on the side walls of the two shell 3 on which the two groups of silicon carbide membrane filter plates 1 deviate from each other; the shell 3 is also communicated with a discharge pipeline 32, the discharge pipeline 32 is arranged on the inner wall of the shell 3 between the two groups of silicon carbide film filter plates 1, and the discharge pipeline 32 is communicated with the gaps of the two groups of silicon carbide film filter plates 1. Thus, the dirty gas is discharged into the discharge duct 31, and then the clean gas is introduced into the gap between the two sets of silicon carbide film filter plates 1 after the dirty gas is filtered by the corresponding silicon carbide film filter plates 1, and is discharged from the discharge duct 32.

The shell 3 is also communicated with a back-blowing pipeline 33, the back-blowing pipeline 33 is communicated with gaps between the two groups of silicon carbide film filter plates 1, a plurality of branch pipelines are communicated with the back-blowing pipeline 33, the branch pipelines are in one-to-one correspondence with the filter channels 12 which are mutually communicated with the gaps between the two groups of silicon carbide film filter plates 1 on the two groups of silicon carbide film filter plates 1, and the air outlets of the branch pipelines are opposite to the corresponding filter channels 12. Therefore, high-pressure air flow is introduced into the back-blowing pipeline 33, the branch pipelines can spray the high-pressure air flow into the corresponding filter channels 12, dust in the adjacent filter channels 12 can be discharged, and back-blowing regeneration is realized. Meanwhile, the blown dust can enter into the gap between the air inlet direction of each group of silicon carbide film filter plates 1 and the corresponding inner wall of the shell.

The bottom of the shell 3 is provided with two ash collection bins 37, the shell 3 on one side of each ash collection bin 37, which is far away from the other group of silicon carbide membrane filter plates 1, of each group of silicon carbide membrane filter plates 1 is mutually communicated, and the ash collection bins 37 are in a necking shape along the vertical direction, so that the ash collection bins 37 are convenient for collecting dust during back blowing, and are convenient for the concentrated discharge of dust.

The setting of firebrick can protect installation casing 3, avoids the influence of high temperature to casing 3 to the setting of casing 3 inner wall, reduces the thermal lapse in the flue gas simultaneously, guarantees that clean gas after filtering still contains effectual heat energy, is convenient for follow-up utilization to heat energy.

The second constant pressure valve 36 is arranged on the shell 3, the second constant pressure valve 36 is communicated with the inside of the shell 3, and gaps between the second constant pressure valve 36 and the two groups of silicon carbide film filter plates 1 are communicated with each other, so that the arrangement of the second constant pressure valve 36 can prevent the air pressure inside the shell 3 from being overlarge, and the protective effect is achieved.

The implementation principle of the embodiment of the utility model is as follows: the silicon carbide membrane filter plate 1 is directly used as the filter core 2 to be installed in the filter shell 3, the filtering area of the filter to air is greatly increased, refractory bricks can be built on the inner wall of the filter shell 3 or other refractory materials are arranged according to actual needs, the whole filter can resist ash-containing flue gas filtration under higher temperature conditions, and theoretically, the working condition can resist flue gas filtration at 800-900 ℃.

Example 3:

the present embodiment differs from embodiment 2 in that, referring to fig. 11, a filter is: the blowback pipeline 33 is arranged along the vertical direction axially, and the blowback pipeline 33 is arranged on the upper side of the shell 3 along the vertical direction, gaps between the blowback pipeline 33 and the two groups of silicon carbide film filter plates 1 are mutually communicated, the blowback pipeline 33 is communicated with a plurality of layers of branch pipelines, the layers of branch pipelines are sequentially arranged at intervals along the vertical direction and are mutually communicated with the blowback pipeline 33, each layer of branch pipeline corresponds to all the filter channels 12 which are positioned at the same height in the two groups of silicon carbide film filter plates 1, and therefore, the filter channels 12 of the corresponding layers can be reversely blown by introducing high-pressure air flow into each layer of branch pipeline.

The implementation principle of the embodiment of the utility model is as follows: since the blowback duct 33 is disposed above the housing 3, the high-pressure air flow discharged into the blowback duct 33 is sequentially ejected from the corresponding branch duct from top to bottom in the vertical direction, so that the branch duct above in the vertical direction ejects the high-pressure air flow first, and therefore the dust in the corresponding filter passage 12 can be sequentially discharged from top to bottom. Thus, the possibility of dust from the upper filter passage 12 being discharged into the lower filter passage 12 can be reduced.

The embodiments of the present utility model are all preferred embodiments of the present utility model, and are not intended to limit the scope of the present utility model, wherein like reference numerals are used to refer to like elements throughout. Therefore: all equivalent changes in structure, shape and principle of the utility model should be covered in the scope of protection of the utility model.

Claims

1. The utility model provides a carborundum membrane filter, includes plate body (11), its characterized in that, a plurality of filtration passageway (12) have been seted up on plate body (11), filtration passageway (12) are followed the thickness direction of plate body (11) runs through the both sides wall of plate body (11) thickness direction, filtration passageway (12) inner wall is provided with closure plate (13), closure plate (13) week side with corresponding filtration passageway (12) inner wall interconnect and seal corresponding filtration passageway (12); the closing plates (13) in two adjacent filtering channels (12) are arranged at intervals along the length direction of the filtering channels (12); the central axis of the filtering channel (12) is obliquely arranged along the thickness direction of the plate body (11); the plate body (11) is made of silicon carbide material.

2. A silicon carbide membrane filter panel according to claim 1, in which the central axis of the filter channel (12) is at an angle of 15 ° to 45 ° to the thickness direction of the panel body (11).

3. A silicon carbide membrane filter panel according to claim 1, in which the cross section of the filter channels (12) is rectangular and the side walls of the filter channels (12) have a width of 2mm to 5mm, a length of 49mm to 800mm and a thickness of 1mm to 1.5mm.

4. A filter core provided with the silicon carbide membrane filter plate as claimed in any one of claims 1 to 3, comprising a mounting bracket (21), wherein a plurality of the silicon carbide membrane filter plates (1) are arranged on the periphery of the mounting bracket (21), and the periphery of the mounting bracket (21) is sealed by the plurality of the silicon carbide membrane filter plates (1); a filter flue (22) capable of containing gas to pass through is formed among the silicon carbide membrane filter plates (1); two adjacent filtering channels (12) are respectively communicated with the outer sides of the filtering flue (22) and the mounting bracket (21); a bottom plate (23) is arranged on one end face of the mounting bracket (21), and the bottom plate (23) seals the filtering flue (22).

5. A filter element according to claim 4, characterized in that the bottom plate (23) is provided with a first constant pressure valve (24), the first constant pressure valve (24) being in communication with the filter chimney (22).

6. A filter element according to claim 4, wherein one end of the mounting bracket (21) is provided with a mounting snap ring (25), the mounting snap ring (25) is disposed on the outer side wall of the mounting bracket (21) and the mounting snap ring (25) and the bottom plate (23) are disposed at intervals along the length direction of the filter flue (22).

7. A filter provided with a filter element as claimed in claim 6 and comprising a shell (3), wherein a discharge pipeline (31) and a discharge pipeline (32) are respectively communicated with the shell (3), a filter layer (4) is arranged in the shell (3), the inner wall of the filter layer (4) is mutually connected with the inner wall of the shell (3), and the communicating parts of the discharge pipeline (31) and the shell (3) and the communicating parts of the discharge pipeline (32) and the shell (3) are respectively arranged on two opposite sides of the filter layer (4);

the filter layer (4) comprises a flower plate (41), a plurality of mounting holes (42) are formed in the flower plate (41) in a penetrating mode, the mounting holes (42) are arranged in one-to-one correspondence with the filter cores (2) and are in plug-in connection with the corresponding mounting holes (42), and the mounting clamping rings (25) are in mutual interference with the flower plate (41) along the length direction of the filter cores (2).

8. A filter according to claim 7, wherein the flower plate (41) is provided with fastening cover plates (43) at intervals in the thickness direction thereof, and the mounting snap ring (25) is provided between the flower plate (41) and the fastening cover plates (43);

the utility model provides a clamp cover plate (43) with be provided with a plurality of fastening screw group (46) between flitch (41), fastening screw group (46) include fastening bolt (461) and fastening nut (462), fastening bolt (461) with fastening nut (462) pass through threaded connection just fastening bolt (461) pass clamp cover plate (43) with flitch (41), clamp cover plate (43) with flitch (41) are followed the axial setting of fastening bolt (461) is in between the nut of fastening bolt (461) with fastening nut (462).

9. A filter according to claim 8, characterized in that the fastening bolt (461) is provided with a distance sleeve (463), the axial ends of the distance sleeve (463) respectively abutting against the flower plate (41) and the fastening cover plate (43).

10. A filter according to claim 7, characterized in that a venturi (47) is provided in the filter element (2).